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Errors like “TS2532: Object is possible ‘undefined’” can happen after defining the value of a variable by using the array.find() method. Here are the possible reasons why thearray.find() method returns undefined: The predicate parameter or callback function passed to the array.find() doesn’t explicitly use the return keyword to return a truthy value. The predicate parameter … Read more
With the introduction of ECMAScript 2015, commonly known as ES6, you can implement object-oriented programming as a class-based approach in JavaScript/TypeScript. Before that, JavaScript developers would use the prototype-based approach to implement the object-oriented pattern in their code. Similar to object-oriented languages like Java and C#, now TypeScript developers can use various object-oriented features like interfaces, inheritance, … Read more
Whether you are a JavaScript/TypeScript developer or just have started learning it, an array is something you must deal with frequently. Based on the nature of your work or the problem you are solving, you need to perform array operations and manipulate the arrays. Some common array operations and manipulations are concatenating two arrays, retrieving … Read more
Checking whether an object is empty is a common and repetitive task for JavaScript and TypeScript developers. It is crucial in cases where the object holds the data from the database, user input, or API. One should always verify the existence of data before proceeding to further operations. Note: The article describes the methods which … Read more
TypeScript is a programming language that can be used to create robust, well-organized code. It’s popular among developers for its clear syntax and ability to communicate type information to other developers. However, TypeScript is reliant on JavaScript, so can you learn it without learning JavaScript first? You can learn TypeScript without JavaScript. However, it’s much … Read more
Verifying whether a variable is an empty string is a common task that at some point developers have to do. There are different solutions presented online for such a simple task, yet they might fail to only check whether a variable is an empty string or not. Note: In this article, we are going to … Read more
To install TypeScript on your machine, use the following command if you use npm. This will automatically install the latest version of TypeScript. If you rather prefer using yarn, use the following command. Similar to using npm, this will also install the latest version of TypeScript by default. How to Install the Latest TypeScript Version … Read more
The array forEach() method is commonly used among TypeScript and JavaScript developers. However, developers often come across unexpected behaviors trying to exit or break the forEach() method using the break keyword to prevent executing any additional logic to subsequent elements of an array. For instance, if we try to run the following example: Unfortunately, this … Read more
Web3 decentralized has come to stay, and IPFS is a way to make storage decentralized. Learn how to upload files using IPFS Infura is a simple React app.
TypeScript has several utility types such as the pick type to simplify development. Checkout this helpful guide to understand the power of the pick type.